Sony HCD-EX99 - Page 20

HCD-EX66/EX88/EX99
HCD-EX66/EX88/EX99
2020
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
•
f
: Internal component.
• 2 : Nonfl ammable resistor.
• C : Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– BD76 Board –
no mark : CD PLAY
– Other Boards –
no mark : TUNER (FM/AM)
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : TUNER (FM)
f : TUNER (AM)
J : CD
E : USB
q : DVD/PC IN
• Abbreviation
AR : Argentina model
E2 : 120V AC area in E model
E4 : 220 – 240V AC area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• : Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Abbreviation
AR : Argentina model
E2 : 120V AC area in E model
E4 : 220 – 240V AC area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Circuit Boards Location
PANEL board
AMP SMPS board
EFX-MODULE board
TUNER board
BD76 board
LOADING board
REGULATOR board
(EX88/EX99)
• Waveforms
– BD76 Board –
– TUNER Board –
– PANEL Board –
16.934 MHz
200 mV/DIV, 500 nsec/DIV
1 V/DIV, 20 nsec/DIV
1 IC101 2 (RFOUT)
(CD play mode)
2 IC101 us (XOUT)
0.6 to 1.5 Vp-p
2.6 Vp-p
1 V/DIV, 20 nsec/DIV
3 IC901 7 (CF2)
12 MHz
3.1 Vp-p
20 MHz
32.768 kHz
1 V/DIV, 10 Psec/DIV
1 V/DIV, 50 nsec/DIV
1 IC302 qd (Sub Clock)
2 IC302 qh (Main Clock)
2.9 Vp-p
3.3 Vp-p
200 mV/DIV, 5 Psec/DIV
1 IC502 ql (X2)
32.768 kHz
0.6 Vp-p